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            posts - 124,  comments - 29,  trackbacks - 0

             

            using System;
            using System.Collections.Generic;
            using System.Text;
            using System.Threading;
            using System.Net.Sockets;
            using System.Net;

            namespace SocketConnTimeOut
            {
                
            class TimeOutSocket
                
            {
                    
            private static bool IsConnectionSuccessful = false;
                    
            private static Exception socketexception;
                    
            private static ManualResetEvent TimeoutObject = new ManualResetEvent(false);

                    
            public static TcpClient Connect(IPEndPoint remoteEndPoint, int timeoutMSec)
                    
            {
                        TimeoutObject.Reset();
                        socketexception 
            = null;

                        
            string serverip = Convert.ToString(remoteEndPoint.Address);
                        
            int serverport = remoteEndPoint.Port;
                        TcpClient tcpclient 
            = new TcpClient();

                        tcpclient.BeginConnect(serverip, serverport, 
            new AsyncCallback(CallBackMethod), tcpclient);

                        
            if (TimeoutObject.WaitOne(timeoutMSec, false))
                        
            {
                            
            if (IsConnectionSuccessful)
                            
            {

                                
            return tcpclient;
                            }

                            
            else
                            
            {
                                
            throw socketexception;
                            }

                        }

                        
            else
                        
            {
                            tcpclient.Close();
                            
            throw new TimeoutException("TimeOut Exception");
                        }

                    }

                    
            private static void CallBackMethod(IAsyncResult asyncresult)
                    
            {
                        
            try
                        
            {
                            IsConnectionSuccessful 
            = false;
                            TcpClient tcpclient 
            = asyncresult.AsyncState as TcpClient;

                            
            if (tcpclient.Client != null)
                            
            {
                                tcpclient.EndConnect(asyncresult);
                                IsConnectionSuccessful 
            = true;
                            }

                        }

                        
            catch (Exception ex)
                        
            {
                            IsConnectionSuccessful 
            = false;
                            socketexception 
            = ex;
                        }

                        
            finally
                        
            {
                            TimeoutObject.Set();
                        }

                    }


                }

            }



            using System;
            using System.Collections.Generic;
            using System.ComponentModel;
            using System.Data;
            using System.Drawing;
            using System.Text;
            using System.Net.Sockets;
            using System.Net;
            using System.Threading;
            using System.IO;

            using System.Windows.Forms;

            namespace SocketConnTimeOut
            {
                public partial class Form1 : Form
                {
                    public Form1()
                    {
                        InitializeComponent();
                    }

                    private void label2_Click(object sender, EventArgs e)
                    {

                    }
                    string strIP = "";
                    int strPort = 8000;
                    int timeout = 1000;
                    private void btnConn_Click(object sender, EventArgs e)
                    {
                        try
                        {
                            strIP = txtIP.Text;
                            strPort = Convert.ToInt32(txtPort.Text);

                            IPAddress localAddr = IPAddress.Parse(strIP);
                            IPEndPoint remoteEndPoint = new IPEndPoint(localAddr, strPort);
                            TcpClient NetworkClient = TimeOutSocket.Connect(remoteEndPoint, timeout);
                        }
                        catch (Exception ex)
                        {
                            MessageBox.Show("連接失敗");
                        }
                    }
                }
            }

            posted on 2010-02-25 14:57 天書 閱讀(5708) 評論(1)  編輯 收藏 引用

            FeedBack:
            # re: C# socket連接connect函數1秒鐘內返回結果
            2010-03-30 08:57 | 555
            用了 非常好  回復  更多評論
              

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